#4243BD#4243BD

#4243BD is a mid, vivid blue. Relative luminance 0.088; OKLCH L 46.1% C 0.186 H 275.9°. Best body text is #FFFFFF at 7.58:1 contrast (WCAG AA passes).

Color values

HEX	#4243BD
RGB	rgb(66, 67, 189)
HSL	hsl(240, 48%, 50%)
HSV	hsv(240, 65%, 74%)
CMYK	cmyk(65.1%, 64.6%, 0%, 25.9%)
CIE-LAB	lab(35.69, 37.68, -64.29)
CIE-LCH	lch(35.69, 74.52, 300.38°)
OKLab	oklab(46.11% 0.0191 -0.1854)
OKLCH	oklch(46.11% 0.186 275.9)
XYZ	xyz(13.4362, 8.8455, 49.1335)
Luminance	0.0885 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4243BD #BDBC42

analogous

#4281BD #4243BD #7E42BD

triadic

#4243BD #BD4243 #43BD42

tetradic

#4243BD #BD4281 #BDBC42 #42BD7E

square

#4243BD #BD4281 #BDBC42 #42BD7E

split-complementary

#4243BD #BD7E42 #81BD42

monochromatic

#222362 #323390 #4243BD #6F70CD #9D9DDD

Accessibility & contrast

On white

7.58

#4243BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#4243BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4243BD

7.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4243BD	#FFFFFF	#000000	##FFFFFF
##4243BD	1.00	7.58	2.77	7.58
#FFFFFF	7.58	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C1

Deuteranopia (green-blind)

#004EBB

Tritanopia (blue-blind)

#00627A

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #4243bd;
/* rgb */ color: rgb(66, 67, 189);
/* oklch */ color: oklch(46.1% 0.186 275.9);

Tailwind

colors: {
  custom: {
    50: '#8577d2',
    500: '#4243bd',
    950: '#000000',
  },
}

SCSS

$custom: #4243bd;
$custom-light: #8577d2;
$custom-dark: #000000;

JSON

{
  "hex": "#4243bd",
  "rgb": {
    "r": 66,
    "g": 67,
    "b": 189
  },
  "hsl": {
    "h": 239.512,
    "s": 48.235,
    "l": 50
  },
  "oklch": {
    "l": 0.46105,
    "c": 0.18638,
    "h": 275.9
  },
  "luminance": 0.08847
}

Semantic roles & 50–950 ramp

primary

#4243BD

secondary

#C9C992

accent

#D750D8

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #4243BD

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →